Piano Forum

Well, I don't know.

If you can do the Gm ballade through to the end, then I would say you're all set.

For me, I'm stuck on Scriabin, the Op. 65 études, and the Op. 74 préludes, and opera 73, 67.

I don't see a lot of Bach in your diet.  I'd  put in a little bit.  The contrapuntus IX from Ars fuga?  Some of the E minor partita (all of it, really)?  Or Scarlatti's K141?  At the very minimum all of the sinfonie of Bach, and be familiar with at least some of the WTC1 and WTC2, just for reading.

You can probably handle a bunch of stuff, technically, so I couldn't say. 

EDIT to add, you can certainly play the Beethoven Op. 27 no.1.  For some reason, I really love that sonata.  It seems you're heavy into romantic repertoire on piano, so I can't really suggest things in that area.  I refuse to play warhorses from Chopin, but I still play from Brahms, some Liszt, Schumann. 

If you want a "big piece," then maybe you're ready to do the Beethoven Op. 111, or the Diabelli vars. (both, obviously, immense pieces), the Bach E minor partita or the Gm English Suite, or the Op. 118. 117 from Brahms (the whole sets).  At the minimum you can certainly play all of the Beethoven Op. 126. bagatelles  That's a good exercise for memorizing, as well, and well within your ability:  each piece is brief, but interesting musically.

If it were me, I'd keep at the very last Scriabin, the Messiaen Vingt regards, and the Shostakovich préludes and fugues (I don't know those last two very well at all, a kind of new "project" of mine, still at the sight-reading stage), as well as continuing with Debussy and Prokofiev, and the Schönberg Op. 25 and others, as well as the Berg Op. 1.  I just got into Hob XVI:32 Haydn sonata in B minor, which is a lot of fun. also just at the sight-reading stage for me.

So what's your question, really?

Do you not know what you want to play?  You should mechanically be able to play whatever, but I cannot force you to play my own favorite pieces.  What's the problem?